im a complete camera noob . im trying to use a t4i for filming a vlog the lighting is pretty normal for your standard dorm room. im told that the lower the ISO the clearer your video quality will be. so my goal is trying to get the iso as low as possible but if i go any lower than 1600 my picture quality will get too dark. currently i have my aperture set at 3.5, shutter speed at 30 and my iso at 1600. if i move down the iso any more it will cause the screen to be too dark im using an 18-55mm lens. what should i be doing? also a completely unrelated question but i charged my battery over night and i used it in my camera for no more than 3 minutes and already the battery looks like this shouldnt the battery be displaying full bars?